Electrically-heated humidifier



D. H. YOUNG.

ELECTRICALLY HEATED HUMIDIFIER.

APPHCAHON ruan MAY22,191&

' 1,328,068, Patented Jan. 13, 1920.

Inventor; Danz'eZ H. Young; 51

arnzy.

DANIEL H. YOUNG, OF MANCHESTER, IOWA.

ELECTRICALLY-HEATED HUMIDIFIER.

Specification of Letters Patent. Patented J an 13, 1920.

Application filed May 22, 1919. Serial No. 298,986,

To all whom it may concern:

Be it known that I, DANIEL H. YOUNG, a citizen of the United States of America, and a resident of Manchester, Delaware county, Iowa, have invented certain new.

and useful Improvements in Electrically- Heated Humidifiers, of which the following is a specification.

My invention relates to improvements in electrically-heated humidifiers, and the objects of my improvements are, first, to supply the boiler of a humidifier with a dentated electrode suitable to efficiently coact electrolytically with another and inclosing electrode for thermogenic creation of steam, and capable of adjustment in a preliminary partial immersion to obviate excessive ini-.

tial reaction, and second,,to form one of the electrodes of a material having higher electrical resistance than the other electrode.

These objects I have accomplished by the means which are hereinafter'described and claimed, and which are illustrated in the accompanying drawings, in which Figure 1 is a vertical central section of a humidifier containin a pair of adjustable electrodes constructe according to my invention, and Fig. 2 is a like view showln a modification in the forms of the electro es.

Similar numerals of reference denote corresponding parts throughout the several views.

1 is a cylindrical boiler mounted upon a base, and having its open upper end exteriorly threaded at 23 with a thread of wide pitch fitting the groove in a cover 22 so that the cover may be rapidly shifted or adjusted vertically.

The numeral 2 denotes a conduit for .water positioned within the hollow base fixed' thereinand having a plurality of openings 12 and 13 registering and communicating with like openings 1n the bottom of the boiler to supply the latter with water, means not shown bein used to maintain the water level in the boi er at a'location indiemission of steam, and other openings to receive centrally orificed plugs 21 and 25 of-insulation, in which are fixed conducting-rods,

3 and 4 respectively, positioned depending within the boiler with their upper ends extending a short distance above the plug and connected electrically with conductors 27 and 30 leading to opposite terminals of a source of electric current 29, the conductor 27 containing a make and break device 28.

.The rod 3 is preferably in two alined parts 3 and 20 connected deltachably by means of a threaded sleeve 19. The lower end of the rod part 20 is threaded and mounted in an interiorly threaded sleeve 15 fixed in a cylinder of insulation 14, the latter being passed through the orifices 13 downwardly into the conduit 2 and supported on the bottom of the conduit.

The numeral 5 denotes a hollow cylinder of conducting material mounted withinthe boiler 1 and about the rod part 20 concentrically, closed at the bottom and having an open top closed by a removable cover 6. Both the bottom of said cylinder and the said cover are centrally orificed to receive the insulating bodies '14 and 18 respectively,

the latter forming an orificed plug trav- 'ersed by said rod part 20. The lower end of the other red 4 is threaded and detach ably connected to a' socket 26 on said cover 6. It will be seen that the rod- 4: is electrically connepted to the cylinder 5 while the rod 3-20 is insulated therefrom. The numeral 16 denotes a hollowcylinder of conducting material positioned within the cylinder 5, of less length and closely fitting the inner wall of the latter. The cylinder 5 has in its upper part, as also in its bottom,

orifices 7 to permit the passage of water.

thereinto from the boiler. To ,keep the cyl inder 5 insulated from the inner wall of said boiler, I place a ring 17 of insulation around and fitting the middle of the cylina der 5 and held thereon by small bosses.

The numeral 9 denotes a hollow cylindrical electrode mounted fixedly and concentrically upon a horizontal diaphragm or partition 8 fixed on the rod part 20. The opposite open ends of the electrode 9 are serrated or dentated at 10 and 11 respectively to provide pluralities of relatively long pointed tongues, spaced from the inner wall/ of the said inner cylinder 16. Preferably, the depending tongues 11 are shaped as shown of different lengths as if that end of the electrode were cut away obliquely.

The modification shown in said Fig. 2 relates only to variations in the forms of the two electrodes, the electrode 9' being a conical body instead of cylindrical, and having alternate depending tongues truncated as shown at 11 to permit of proper spacing of the other tongues 11. To conform to said conical electrode, electrode members 16 and 31, which answer to the cylindrical electrode upwardly so that only the lower parts of the tongues 11 of Fig. 2, or of the longer tongues 11 only of Fig. 1, are immersed in the water. The circuit is then closed and then the cover 22 is lowered to completely immerse electrodes 9. The exposure of a small part only of said electrode by immersion, at the timeof closing the circuit, prevents excessive reaction which would be liable to blow out any fuses in the circuit.

' The gradual immersion of the electrode then brings the device into full operation with out liability to such a reaction.

Dividing the electrode 9 into a large number of tapering tongues or points facilitates rapid discharge of the electrical current. The inner electrode part 16 is made from a conducting material, such as iron, having higher resistance than the electrode part 5 or 31 as the case may be, made. for-instance,

of brass or copper. This is effective in fur mshmg enough resistance to the entering current 'to maintain the desired heating efi'ect. 7

As the conducting rod 3 is in two parts,

and the otherand shorter conducting rod-4 is detachably connected to the cylindrical body 5, the rod parts 3 and 4: may be readily disassembled from the cylinder 5 for convenience in packing and transportation.

Various changes may be effected 1n the form, positions, arrangements, materials,

.and other construction of the parts of my device, without departing from, however, the principles of the invention. a

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. Tu a device of the characterdescribed, a boiler, a hollow electrode therein, another hollow electrode positioned within-the firstmentioned electrode, insulatied therefromi, and provided withoppositely-directed fingers located in spaced relation thereto.

a boiler, and electrodes removably supported within the boiler, insulated therefrom and spaced from each other and from the boiler, said electrodes being innerand outer concentric hollow bodies, one of which has oppositely-directed terminal 1 points 1 located near the adjacent wall of the other electrode.

- 3. In a device of the character described, I a boiler, a hollow electrode of relatively low electrical "resistance supported within the 2. In a device'of the character described,

boiler and insulated therefrom, a. hollow liner for said electrode of higher electrical resistance, and another electrode-supported within said liner, spaced and insulated therefrom. 1 4

4. In adevice ofthe character described,

a boiler, and hollow concentric electrodes therein, spaced and insulated therefroni'and from each. other, one electrode 'beinggof greater electrical resistance than the other.

5. In a device of the character described,

a boiler, and electrodes therein spaced and insulated from each other, one electrode be ing of greater electrical resistance than the.

other. 5

6.1m a device of the character described, a boiler, and electrodes therein, spaced-apart, one electrode being of greater electrical resistance than the other and being mounted to divide ofi' a closed interspace between;

itself and the boiler.

7. In, a device of the character described, a boiler, a hollow body positioned therein to isolate therebetween an inclosed airspace, a hollow electrode lining the-said hol-- low body and being of a relatively high electrical resistance, and another electrode positioned within, 'spacedand insulated from the first-mentioned hollow electrodeand of a relatively lower electrical resistance.

Signed at Waterloo, Iowa, this Sthday of May, 1919.

DANIEL H. YOUNG; 

